In my life as a soldier and citizen, I have seen time and time again that inaction has dire consequences.

I was raised to believe that soldiers were strong and wise and brave and faithful; they didn't lie, cheat, steal or abandon their comrades.

I was raised with traditional stories of leadership: Robert E. Lee, John Buford at Gettysburg. And I also was raised with personal examples of leadership. This was my father in Vietnam. And I was raised to believe that soldiers were strong and wise and brave and faithful; they didn't lie, cheat, steal, or abandon their comrades.

When you go through some controversy and you see your face on the news in a negative way for 48 hours... you doubt yourself. And your friends make the difference. They become a safety net that come in and say, 'That's not the case.' And the relationships that you've built... come to the fore.

The basic DNA we've got to implant in leaders now is adaptability: not to get wedded to the solution to a particular problem, because not only the problem but the solution changes day to day. Creating people who are hardwired for that is going to be our challenge for the future.

If every soldier is authorized to make one mistake, then we lose the war.